---
title: applicationExtension
framework: uniformtypeidentifiers
role: symbol
role_heading: Type Property
path: uniformtypeidentifiers/uttype-swift.struct/applicationextension
---

# applicationExtension

A type that represents an app extension.

## Declaration

```swift
static var applicationExtension: UTType { get }
```

## Discussion

Discussion The identifier for this type is com.apple.application-and-system-extension. This type conforms to UTTypeXPCService.

## See Also

### Apple system types

- [framework](uniformtypeidentifiers/uttype-swift.struct/framework.md)
- [applicationBundle](uniformtypeidentifiers/uttype-swift.struct/applicationbundle.md)
- [spotlightImporter](uniformtypeidentifiers/uttype-swift.struct/spotlightimporter.md)
- [quickLookGenerator](uniformtypeidentifiers/uttype-swift.struct/quicklookgenerator.md)
- [xpcService](uniformtypeidentifiers/uttype-swift.struct/xpcservice.md)
- [systemPreferencesPane](uniformtypeidentifiers/uttype-swift.struct/systempreferencespane.md)